Buy the annual class of the evergreen classic course of Lao Tang mathematics on CCTalk. This course includes pre-class and after-class services, including explaining and tracking the learning situation, but the teacher rarely communicates with us and only sends video lessons every week.

Laotang Mathematics is a brand of mathematics subject under Sichuan Zhiboxin Education Consulting Service Co., Ltd. It provides online course counseling for high school students, mainly with teacher Tang Chuanhong.